

<div *ngIf="hero">
    <h2>{{hero.name | uppercase}} Details</h2>
    <div><span>id: </span>{{hero.id}}</div>
    <div><span>name: </span>{{hero.name}}</div>
  <label>name:
    <input [(ngModel)]="hero.name" placeholder="name">
  </label>
</div>

<button (click)="goBack()">go back</button>